Knock Sensor: Inspection

REMOVE THROTTLE BODY COVER
REMOVE INTAKE AIR CONNECTOR
REMOVE INTAKE MANIFOLDS ASSEMBLY (See REMOVAL )
INSPECT KNOCK SENSORS 1 AND 2

Fig 1: Inspecting Knock Sensors
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the knock sensor connectors.
2. Using an ohmmeter, measure the resistance between terminals.
  Resistance: 120 to 280 k Ω at 20° C (68° F)
HINT:

If the resistance is not as specified, replace the sensor.
REMOVE KNOCK SENSOR
1. Disconnect the 2 knock sensor connectors.
2. Remove the 2 nuts and 2 knock sensors.
  
  Fig 2: Removing Knock Sensor
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL KNOCK SENSOR

Fig 3: Installing Knock Sensor
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Install the 2 knock sensors with the 2 nuts as shown in the illustration.
  Torque: 20 N.m (204 kgf.cm, 15 ft.lbf)
2. Connect the 2 knock sensor connectors.
INSTALL INTAKE MANIFOLD ASSEMBLY (See INSTALLATION )
INSTALL INTAKE AIR CONNECTOR
INSTALL THROTTLE BODY COVER